Summary: Mortally weakened by the Spider Queen on Metebilis 3, the Doctor is forced to regenerate. His recuperation is cut short as UNIT investigates a spate of robberies involving components for a top-secret disintegrator gun. The culprit is quickly identified as a highly sophisticated robot built by Professor Kettlewell, which is being ordered to act against its Prime Directive.
Format: moving image
Publisher / Publication Date: BBC Video 2007